Comparison of bednets impregnated with different pyrethroids for their impact on mosquitoes and on re-infection with malaria after clearance of pre-existing infections with chlorproguanil-dapsone

Comparisons of bednets treated either with alphacypermethrin or lambdacyhal othrin showed similar effectiveness by various entomological criteria. Lamb dacyhalothrin was associated with significantly more reports of nasal irrit ation than alphacypermethrin. The 2 net treatments were equally effective i n reducing incidence of new malaria infections and the treated nets were mu ch more effective than untreated nets. These measurements were made after c learing existing infections with chlorproguanil-dapsone. This drug combinat ion was more than 99% effective in clearing infections 1 week after treatme nt and a study of children taken to an altitude with no malaria transmissio n showed that there were very few recrudescences.